Home / 121,310.34-181,965.51-47,386.50

Finding the Fourth Proportional to 121,310.34, 181,965.51 and 47,386.50

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Solution

The fourth proportional to 121,310.34, 181,965.51 and 47,386.50 is: 71,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,310.34 : 181,965.51 = 47,386.50 : x
  2. Step 2: Convert to fraction form
    121,310.34/181,965.51 = 47,386.50/x
  3. Step 3: Cross multiply
    121,310.34x = 181,965.51 × 47,386.50
  4. Step 4: Simplify right side
    121,310.34x = 8,622,708,639.62
  5. Step 5: Solve for x
    x = 8,622,708,639.62/121,310.34
  6. Step 6: Final answer
    x = 71,079.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.